Congenital hypertrophic pyloric stenosis is a developmental hypertrophy of the pyloric annulus in the child and is an organic disease that cannot be solved by alternative treatments and needs to be treated surgically, early on by open surgery and currently by laparoscopic resection, which cuts the child’s annulus through the abdominal cavity with less impact on the child. Alternatively, a pediatric gastroscope can be used to enter the gastric cavity and excise the pyloric hypertrophic cricothyroid muscle through a submucosal tunnel without damaging the peripyloric mucosa of the child, with better results.